ZOJ

#include<iostream>
#include<string>
using namespace std;
int main()
{
    string str;
    string str_r = "";
    int count_z,count_o,count_j;
    while(cin>>str)
    {
        count_z = 0;
        count_o = 0;
        count_j = 0;
        str_r = "";
        for(int i=0;i<str.length();i++)
        {
            if(str[i]==‘Z‘)
                count_z++;
            if(str[i]==‘O‘)
                count_o++;
            if(str[i]==‘J‘)
                count_j++;
        }
        int i,j,k;
        for(i=0,j=0,k=0;i<count_z||j<count_o||k<count_j;i++,j++,k++)
        {
            if(i<count_z)
            {
                str_r += "Z";
            }
            else{
                str_r += "";
            }
            if(j<count_o)
            {
                str_r += "O";
            }
            else{
                str_r += "";
            }
            if(k<count_j)
            {
                str_r += "J";
            }
            else{
                str_r += "";
            }
        }
        cout<<str_r<<endl;
    }
    return 0;
}